反应详情

A mixture of tert-butyl 2-(benzothiazol-6-ylcarbonyl)hydrazinecarboxylate (5.28 g, 18.0 mmol) and trifluoroacetic acid (20 mL) was stirred at room temperature for 1 hr. Trifluoroacetic acid was evaporated under reduced pressure, and the residue was recrystallized from ethanol to give the title compound (5.18 g, yield 94%) as colorless crystals.

1. customTrifluoroacetic acid was evaporated under reduced pressure
2. customthe residue was recrystallized from ethanol